Process of forming seamless expansion-shields for lag-bolts from sheet metal.



I E. e. DIEFENDORF. PROCESS OF FORMING SBAMLESS EXPANSION SHIELDS FOR LAG BOLTS FROM SHEET METAL.

, APPL IGATION FILED JAN. 26, 1914, v 1, 1 1 4,971 Patented Oct. 27, 19 14.

' a sums-snif E, G. DIEFENDORP. BBOGESS OFLFORMING SEAMLESS EXPANSION SHIELDS FOR LAG BOLTS FROM SHEET METAL.

APPLIGA'I'ION FILED JAN. 26,1914.

1 1 1 42: 971. I Patented Oct. 27, 1914.

2 SHEETS SHEIIT 2.

mt ass-Es. I e tur. W W W M EW lElliIl i iltliiill'i ill. 1'

PROCESS 01 liflRMlTtlti Applioctioo till-ii, mimicr :il'iil out 13 m n, me gmv To all whom, it may (JOILCWH Be it known that .l, llmm com", a, citizcn of the Unit l'lllz'tlii-h wsiil ing at Eric, in the county o lh'ic nml liilin'lu of Pennsylvania, hui'c im'm'itvrl col-lain now and useful Improi'cm in l roc scs of l orming Scamlw's llx 'mnsico-f'5hiclils loi- Lag-Bolts from Shoot Iliil'ctcl; gl'llil l (in hereby declare the follow" a to ho 1"; full, clear, and exact description of tho lllillk" tion, such as will cnuhlc others Slilllitl in thc art to which it nppci'tuins to 11m loo nm'l can the some, rcfci'cnce hcingzj llllil. to thc moons-- panying; drawings, and to tho litters oi i" crcncc marked then-con, forming pint oi lllh? specification.

My invention relates to cxpnnsioc shicliha for 1agholts, and has for its ohjccl ihc ill-1' fcctingg of a prom s ii'hcrchy smmhws punsion shiclrls for lag -bolts may hc lm'mml up from sheet metal.

Tho steps of my pi'ccccs cm hij vflmltciset forth and described, 4 l one illiisti-cizml in tho accompanying (lruwin ll! w iii-h Figurc 1, is a 12m view 0' om l'olm oi? sheet metal lililHJl'C used with my 1 1w; Fig: 2; shows a plan view of c Uflriitim oi sciil blank otter" recciving om oi. ll of my process. lin'; 3, shows :i play:

a portion of said lolzmlq, ilii' Siting slop of my proccss. .l11g. l, is lit in, iti i lcml :Efxlltrill section of the sumo, ilh sm tmgiz' :1 W3 of my process. Fig. 5, is ii lliic vicw ol' thc some, illustrating at step cl 12* wo Fig. 6, 1111 cnd View of c Hliillll H c l' llllll." ing shield loi' lug-bolts, mimic in ziccrmluccc with my process. ft ig. Y, is it ccctml loc gitudinal section oil it seamless int-mulling shield made in RCCML'lHHW with my worms, in place on {L lug-bolt. 'q' it plan, view of another form Olliktlliwil mctial hlrmh usccl'in my process for owning}: mimic shields {or lcglmlt. l igg. 9 is c plan, of a portion of the scum illmstmliiw; alternative i ill ishml 'lhr- :u-i'mlcil wl; LT n, of lhc :u'nls ll. :u'c them llllll, upvuiril w; shown in Fig. t 'l he dish a. is ihcn hill-mini into :i cv'lin that or" thimhlc c prci'cruhly h moans o? a forming iiic l llllil plump; 5 ll, as shown in. hi l; thc forming); ill ihis thimhlc a", i'illlblllilf lhc milinl 1mm; l to mtcziil upiim'il clung, llii" mimics of ihe [)iilllfiilf C. "'lhc lust sit-p ol' my lllwi A is: to cut out the vioswl cml ol' the ihimhlc which I pretci'uhl tlU h m ans oi i lilll if ilic ll; and punch .ll'] as shown in l 5; :xltci' which ihi' shis hl is l'czlilll" ioi tho wcption ol' a lagholt l as shown in Fig l.

in hit. hi. i show 1H1 liilllil'illlilill "form of hlrink i l/Q having :17 control g lls-l: (If, and 1': \lill onus lln inicgg ml thorcii'ith, which is l wit i'ccth ii,

liimll llw sumo as :u'c tho steps of my i-cum 1 illiwliwilieil in his. .3 11ml ll.

liming): thus. lolly illustmtml and desci'ihi-il my iin c-iwctl {armor-is; so us to cmahlc olhcis to utili'mthc sumo, what l claim as now iiml, (lUi'Fli'i to sccurc hy lqcttcl's lutmt, isz--- The process oi? mining OZLPnXlsioll SlIlLldS For hug-Tool consisting; oi cutling :1 disk from shoot mctnl with radial arms cxtcuclmmmn ing from th periphery thereof, forming In testimony Whereof I afix my sigma.- thread engaging means in the metal mm ture in presence of {Wm witnesses.

posing said. arms bend'm. the matal of said am lo itudinu an givilw Said; disk EDWARD DIEFENDORF' 5 and arms a cylindrical form "wit the edges Witnesses:

of said arms outward, substantially as de- H. M. STURGEON, scribed. P. V. Gnmonn. 

